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Greg Kroah-Hartman
579f9786b7 SoCFPGA firmware updates for v7.2 
- Simplify service driver memory management by using a flexible array
 - Change FCS call to get provision data to asynchronous
 - Avoid blocking the call the reboot_image sysfs when busy
 - Add support to query the ATF version
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Merge tag 'svc_updates_for_v7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into char-misc-next

Dinh writes:

SoCFPGA firmware updates for v7.2
- Simplify service driver memory management by using a flexible array
- Change FCS call to get provision data to asynchronous
- Avoid blocking the call the reboot_image sysfs when busy
- Add support to query the ATF version

* tag 'svc_updates_for_v7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  firmware: stratix10-svc: Add support to query Arm Trusted Firmware (ATF) version
  firmware: stratix10-rsu: avoid blocking reboot_image sysfs when busy
  firmware: stratix10-svc: change get provision data to async SMC call
  firmware: stratix10-svc: kmalloc_array + kzalloc to flex
 2026-06-08 21:37:14 +02:00
Greg Kroah-Hartman
8b98f9f42e coresight: Self-hosted tracing updates for Linux v7.2 
Updates for the CoreSight self hosted tracing subsystem includes:
  - Better power management for components based on the CPU PM, including
    support for components on the trace path for CPUs. Add support for
    save/restore for TRBE
  - Miscellaneous fixes to the drivers
    * Fix overflow when the buffer size is > 2GB for tmc-etr
    * Ultrasoc SMB Perf buffer OOB access
 
 Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
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Merge tag 'coresight-next-v7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/coresight/linux into char-misc-next

Suzuki writes:

coresight: Self-hosted tracing updates for Linux v7.2

Updates for the CoreSight self hosted tracing subsystem includes:
 - Better power management for components based on the CPU PM, including
   support for components on the trace path for CPUs. Add support for
   save/restore for TRBE
 - Miscellaneous fixes to the drivers
   * Fix overflow when the buffer size is > 2GB for tmc-etr
   * Ultrasoc SMB Perf buffer OOB access

Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>

* tag 'coresight-next-v7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/coresight/linux: (36 commits)
  coresight: ultrasoc-smb: Fix OOB write in smb_sync_perf_buffer()
  coresight: etb10: restore atomic_t for shared reading state
  coresight: platform: defer connection counter increment until alloc succeeds
  coresight: sysfs: Validate CPU online status for per-CPU sources
  coresight: Move CPU hotplug callbacks to core layer
  coresight: sysfs: Increment refcount only for software source
  coresight: trbe: Save and restore state across CPU low power state
  coresight: Add PM callbacks for sink device
  coresight: Control path during CPU idle
  coresight: sysfs: Use source's path pointer for path control
  coresight: etm3x: Set active path on target CPU
  coresight: etm4x: Set active path on target CPU
  coresight: Save active path for system tracers
  coresight: Introduce coresight_enable_source() helper
  coresight: Use helpers to fetch first and last nodes
  coresight: Control path with range
  coresight: Disable source helpers in coresight_disable_path()
  coresight: syscfg: Use IRQ-safe spinlock to protect active variables
  coresight: etm4x: Remove redundant checks in PM save and restore
  coresight: etm4x: Hook CPU PM callbacks
  ...
 2026-06-08 21:35:34 +02:00
Greg Kroah-Hartman
745ffd4e7b This pull request contains the following interconnect updates for 
the 7.2-rc1 merge window:
 
 - New driver for Shikra SoC
 - New driver for Nord SoC
 - New driver for Hawi SoC including CPU/LLCC bwmon support
 - Add missing SDCC nodes for Eliza SoC
 - Misc cleanups and fixes.
 
 Signed-off-by: Georgi Djakov <djakov@kernel.org>
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Merge tag 'icc-7.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/djakov/icc into char-misc-next

Georgi writes:

This pull request contains the following interconnect updates for
the 7.2-rc1 merge window:

- New driver for Shikra SoC
- New driver for Nord SoC
- New driver for Hawi SoC including CPU/LLCC bwmon support
- Add missing SDCC nodes for Eliza SoC
- Misc cleanups and fixes.

Signed-off-by: Georgi Djakov <djakov@kernel.org>

* tag 'icc-7.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
  interconnect: qcom: add Hawi interconnect provider driver
  dt-bindings: interconnect: qcom: document the RPMh NoC for Hawi SoC
  dt-bindings: interconnect: qcom-bwmon: Add Hawi llcc-bwmon compatible
  interconnect: qcom: eliza: Add SDCC1 slave node
  dt-bindings: interconnect: qcom,eliza-rpmh: Add SDCC1 slave
  interconnect: qcom: Restrict drivers per ARM/ARM64
  interconnect: qcom: Fix indentation
  dt-bindings: interconnect: qcom,sm6115: Restrict children and clocks
  dt-bindings: interconnect: qcom,sm6115: Drop incorrect children if:then: block
  dt-bindings: interconnect: qcom,sdm660: Disallow clocks when appropriate
  interconnect: Move MODULE_DEVICE_TABLE next to the table itself
  interconnect: Do not create empty devres on missing interconnects
  dt-bindings: interconnect: qcom-bwmon: Add Hawi cpu-bwmon compatible
  interconnect: qcom: Add interconnect provider driver for Nord SoC
  dt-bindings: interconnect: Document RPMh Network-On-Chip for Qualcomm Nord SoC
  interconnect: qcom: add Shikra interconnect provider driver
  dt-bindings: interconnect: document the RPM Network-On-Chip interconnect in Shikra SoC
 2026-06-08 21:33:47 +02:00
Greg Kroah-Hartman
47b56cc367 IIO: New device support, features and cleanup for the 7.2 cycle. 
Like many areas of the kernel IIO has seen a lot of new contributors
 though in this case that is not all AI driven, but also reflects and annual
 surge of student contributions from usp.br. We also have several new
 regular reviewers who are helping with the surge (thanks to all our
 active reviewers!)
 
 Given there was a lot of cases of similar improvements applied to
 different drivers, I have grouped those into a special section (various
 drivers) to avoid mass duplication.
 
 New device support
 ------------------
 
 adi,ad4130
 - Add support for AD4129-4, AD4129-8, AD4130-4, AD4131-4 and AD4131-8
   after reworking the driver to be suitable for multiple device support.
 adi,ad4080
 - Support the AD4880 and AD4884 dual-channel parts. Interesting parts
   as have two separate data pipelines (including SPI buses interfaces),
   but the only current backend IP combines the two so they cannot be
   treated as independent devices.
 adi,ad5706r
 - New driver for this 4 channel current output DAC.
 adi,ad4691
 - New driver supporting this family of ADCs. Support for AD4691, AD4692,
   AD4693 and AD4694 which support either 8 or 16 channels with different
   max sampling rates. Feature rich driver including SPI offload support.
 adi,ltc2983
 - Add support for the ADT7604 in which the same sensor die as the
   LTC2984 is used for leak detection (liquid coverage of a sense area).
 allwinner,adc
 - Support for A523 SoCs. Similar to existing parts but with an additional
   clock.  Includes adding support for non contiguous channel lookup
   for in kernel use (fwnode_xlate callback).
 broadcomm,apds9999
 - New driver for the APDS9999 Ambient Light, RGB and proximity sensor.
 memsic,mmc5983
 - New driver for this 3-axis magnetometer.
 taos,tsl2772
 - Add support for the AVAGO APDS9900 and APDS9901 Ambient Light and
   Proximity sensors. which are very similar to existing part with slightly
   different integration time choices.  Includes removal of driver for these
   parts from drivers/misc.
 vishay,veml3328
 - New driver for this RGB+IR light sensor.
 
 Features
 --------
 
 IIO Core
 - Support for IEEE 754 floating point values in buffer scan elements.
 - Support quaternion axis representation (missing the scaler part)
 microchip,mcp4821
 - Add configurable gain control
 qcom,pm8xxx-xoadc
 - Add per channel labels.
 st,lsm6dsx
 - Support for rotation sensing on the LSM6DSV and LSM6DSV16X using
   both floating point and new quaterionaxis rotation modifier.
 
 MAINTAINERS update
 ------------------
 
 IIO top level entry
 - Include Documentation/driver-api/iio/
 adi,*
 - Top level ADI entry maintainer switch from Lars-Peter Clausen to Nuno Sá
   reflecting what has been the reality for some time. Thanks to Lars-Peter
   who was very active for many years, but has moved on to other things.
   Also add the linux@analog.com email list to ensure we don't get a gap
   in future.
 - Maintainer updates to reflect Cosmin Tanislav having moved on - thanks
   to Marcelo Schmitt for taking these over.
 sensiron,scd30
 - Replace maintainer (Tomasz Duszynski) with Maxwell Doose.
 
 Cleanups, minor fixes and hardening.
 ------------------------------------
 
 Documentation
 - Add missing powerdown modes to ABI docs.
 - Use modern helpers for buffer definition in the examples.
 core
 - Rework of the handling of timestamps so that the offset is cached at
   buffer resize time (during enabling) rather than based on assumption
   that relied in the timestamp being last and the largest element and
   so always 8 bytes before end of the scan. Underlying problem was
   triggered by scans with repeated type elements such as quaternions
   with each element more than 2 bytes - Giving a 16 byte+ aligned channel
   with result that a following timestamp may be 16 bytes from end of scan,
   rather than 8. Note that for the bosch,bno55 a compatibility hack means
   that it will duplicate the timestamp putting  a second copy at previously
   incorrect location.
 - Tidy up use of kernel types in buffer code to not use int64_t given all
   calls use s64.
 various drivers
 - Drop unused driver_data in device id tables - includes cleanup of various
   drivers that had only one choice where it can be hard coded elsewhere.
 - Move to named initializers for many i2c_device_id and platform_device_id
   tables (I have no idea how we go into habit of using named initializers
   for only a subset of the table types - e.g. of_device_id).
 - Make IIO_CHAN_SOFT_TIMESTAMP() macro a compound literal allowing simple
   use in various drivers that do dynamic channel definitions. Use it in
   all such cases.
 - Use dev_err_probe() and local dev variables to tidy up older drivers.
 - Switch more drivers to devm_mutex_init() to provide minor debug benefits.
 - Reorder code to put MODULE_DEVICE_TABLE() next to the tables.
 - Lots of use of cleanup.h magic to improve code flow, often including
   related refactors such as introducing helpers.
 - Replacement of usleep_range() with fsleep()
 - Reduce logging noise where functions either provide their own extensive
   reports on error, or where a clear error code is returned to userspace.
 - Minor spelling and style fixes (improving bracket usage, not using
   __packed etc)
 hid-sensors-*
 - Drop helpers for setting channel bit masks in favor of a compound
   literal at the call site.  Also general cleanup of surrounding code.
 hid-sensors-magn
 - Use u32 rather than bare unsigned for types.
 hid-sensors-rotation
 - Make sue of ext_scan_type handling for static case rather than duplicate
   chan_info structures.
 adi,ad3552r
 - Use field_get() to replace open coded equivalent.
 adi,ad4170
 - Switch from switch to table lookup for GPIO modes.
 adi,ad5686
 - Apply IWYU principal to included a consistent set of headers.
 - Deduplicate regmaps for AD5684 and AD5693 as identical.
 - Switch from an enum value in driver data and array look up to pointers
   to separate structures, improving readabilty and avoiding issues with
   0 value when using helpers to deal with different firmware types.
 - Add of_match_id table to SPI driver rather than relying on fallback to
   spi_device_id table.
 - Introduce some helpers for powerdown mask control.
 - Add helpers for control sync simplifying a couple of corner cases.
 - Docs fixes.
 - Add an ops structure to simplify future addition of operations beyond
   read and write.
 adi,ad7191
 - Switch to best practice of using device_property_present() to detect
   if an optional property is there rather than error values on querying
   the property.
 adi,ad7280a
 - Use local variables to improve readability of breaking up chan-address.
 adi,ad7825
 - Cleanup a type mismatch in clamp() call.
 adi,ad799x
 - Include improvements
 - Local dev variable to shorten code lines.
 - Cache regulator voltage at probe (these never change in practice)
 - Convert to devm for all unwind handling.
 adi,ad9832
 - Improve include relevance including replacing kernel.h with more specific
   headers.
 - Simplify some maths.
 adi,ad9834
 - Improve include relevance including replacing kernel.h with more specific
   headers.
 adi,adt7316
 - Add a comment to avoid future 'fixes' for error handling during the
   odd sequence used to flip from I2C mode to SPI mode.
 adi,adxl*
 - Documentation consistency improvements.
 asahi-kasei,ak8975
 - Fix missing runtime pm calls for buffered capture.
 - Fix missing pm_runtime_put_autosuspend() in an error path that would leave
   the device stuck on.
 - Close a potential uninitialized kernel stack leak.
 - Extensive driver modernization including: header relevance, fsleep()
   various minor bugs, dropping duplicate error messages and avoiding
   magic lengths for buffers.
 - Replace opencoded polling with iopoll().
 - Add error checking to gpio reads.
 avia,hx711
 - Move scale computation from global data to per device avoiding problems
   if multiple devices present.
 - General binding text cleanup.
 bosch,bmg160
 - Add missing mount-matrix entry to binding.
 bosch,bno55
 - Terminate error strings with newlines.
 devantech,srf08
 - Replace sprintf() with sysfs_emit() and sysfs_emit_at() to make intent
   clearer.
 freescale,mma8452
 - Add missing return value check.
 - Fix potential probe ordering issue by switching to non devm irq request.
 linear,ltc2309
 - Add chip specific read delays.
 - Improve chip_info structure, adding __counted_by_ptr marking and
   reorganizing to improve packing.
 linear,ltc2983
 - Fix a firmware combination where default n_wires of 2 bypasses exclusion
   of adi,current-rotate whereas explicitly setting it to 2 does not.
 - Fix potential race with completion reinit.
 - Improve error message wording consistency.
 - Use fwnode_property_present() to detect optional properties rather
   than fragile return value checking.
 microchip,mcp3422
 - Use of GENMASK(), FIELD_GET(), FIELD_PREP() to improve readability and
   generally modernize driver.
 microchip,mcp47feb02
 - Fix binding example to use a possible I2C address.
 - Fix binding bounds on channel number.
 - Standardize binding example indentation
 nxp,saradc
 - Increase chances of recovering from a failure in the interrupt handler
   by notifying the trigger that it can reenable even when the read failed.
 - Use field_get() to replace opencoded equivalent.
 qualcomm,*
 - Standardize on Qualcomm company naming in Kconfig.
 richtek,rtq6056
 - Add i2c_device_id table for legacy instantiation.
 samsung,ssp
 - Replace custom timestamp channel macro with main one.
 sciosense,ens210
 - Now scoped_guard() has been reworked, no need for a return
   that can never be reached.
 sensiron,scd30
 - Constify command lookup table.
 - Sanity check for NULL buffer of non zero size being provided to
   sc30_i2c_command()
 sensortek,stk3310
 - Include  more appropriate headers.
 - Ensure interrupt in appropriate mode after resume.
 - Structure definition improvements.
 - Use size_of() to replace opencoded sizes.
 siliconimage,si1133
 - Resolve counter related issues on timeout error paths.
 - Unused macro removal, improved macro definitions,.
 - Include relevance improvements.
 st,lsm6dsx
 - Fix an issue with applying invalid data check to wrong type of sample.
 taos,tcs3472
 - Try to powerdown chip on probe failure.
 - Devm usage and dropping of remove() callback.
 - Various other minor cleanup.
 taos,tsl2591
 - Dead code removal.
 - Simplify tsl2591_persist functions using a look up table.
 ti,ads1298
 - Fix wrong comment on timeout (and minor code improvement)
 - Drop unnecessary CONFIG2 write during init.
 ti,ads7950
 - Check ret rather that ret < 0 for spi_setup() call.
 - Use fully devm managed resources including moving to
   devm_regulator_get_enable_read_voltage() at probe time rather than
   querying evey time.
 - Using spi_optimize_message() to reduce CPU usage.
 ti,ads8688
 - User read_avail() callback rather than open coding handling of
   available attributes.
 ti,opt3001
 - Header relevance improvements
 - Use GENMASK for field definitions to improve readability.
 vishay,vcnl4000
 - Switch from enum in device_data to individual names structures
   impmroving code readabililty.
 - Move to devm handling for remainder of probe.
 vishay,veml6030
 - Drop pointless read of current Iteration Time index as it is not used.
 xilinx,ams
 - Fix potential out of bound channel lookup.
 - Replace some large switch statements with table lookups.
 yamaha,yas530
 - Put label in chip info structure to avoid look up in i2c_device_id table.
 
 Drop
 ----
 
 iio-trig-interrupt.
 - Not used for some time and no support for modern firmware bindings or
   in kernel users. So drop it.
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Merge tag 'iio-for-7.2a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio into work-testing

IIO: New device support, features and cleanup for the 7.2 cycle.

Like many areas of the kernel IIO has seen a lot of new contributors
though in this case that is not all AI driven, but also reflects and annual
surge of student contributions from usp.br. We also have several new
regular reviewers who are helping with the surge (thanks to all our
active reviewers!)

Given there was a lot of cases of similar improvements applied to
different drivers, I have grouped those into a special section (various
drivers) to avoid mass duplication.

New device support
------------------

adi,ad4130
- Add support for AD4129-4, AD4129-8, AD4130-4, AD4131-4 and AD4131-8
  after reworking the driver to be suitable for multiple device support.
adi,ad4080
- Support the AD4880 and AD4884 dual-channel parts. Interesting parts
  as have two separate data pipelines (including SPI buses interfaces),
  but the only current backend IP combines the two so they cannot be
  treated as independent devices.
adi,ad5706r
- New driver for this 4 channel current output DAC.
adi,ad4691
- New driver supporting this family of ADCs. Support for AD4691, AD4692,
  AD4693 and AD4694 which support either 8 or 16 channels with different
  max sampling rates. Feature rich driver including SPI offload support.
adi,ltc2983
- Add support for the ADT7604 in which the same sensor die as the
  LTC2984 is used for leak detection (liquid coverage of a sense area).
allwinner,adc
- Support for A523 SoCs. Similar to existing parts but with an additional
  clock.  Includes adding support for non contiguous channel lookup
  for in kernel use (fwnode_xlate callback).
broadcomm,apds9999
- New driver for the APDS9999 Ambient Light, RGB and proximity sensor.
memsic,mmc5983
- New driver for this 3-axis magnetometer.
taos,tsl2772
- Add support for the AVAGO APDS9900 and APDS9901 Ambient Light and
  Proximity sensors. which are very similar to existing part with slightly
  different integration time choices.  Includes removal of driver for these
  parts from drivers/misc.
vishay,veml3328
- New driver for this RGB+IR light sensor.

Features
--------

IIO Core
- Support for IEEE 754 floating point values in buffer scan elements.
- Support quaternion axis representation (missing the scaler part)
microchip,mcp4821
- Add configurable gain control
qcom,pm8xxx-xoadc
- Add per channel labels.
st,lsm6dsx
- Support for rotation sensing on the LSM6DSV and LSM6DSV16X using
  both floating point and new quaterionaxis rotation modifier.

MAINTAINERS update
------------------

IIO top level entry
- Include Documentation/driver-api/iio/
adi,*
- Top level ADI entry maintainer switch from Lars-Peter Clausen to Nuno Sá
  reflecting what has been the reality for some time. Thanks to Lars-Peter
  who was very active for many years, but has moved on to other things.
  Also add the linux@analog.com email list to ensure we don't get a gap
  in future.
- Maintainer updates to reflect Cosmin Tanislav having moved on - thanks
  to Marcelo Schmitt for taking these over.
sensiron,scd30
- Replace maintainer (Tomasz Duszynski) with Maxwell Doose.

Cleanups, minor fixes and hardening.
------------------------------------

Documentation
- Add missing powerdown modes to ABI docs.
- Use modern helpers for buffer definition in the examples.
core
- Rework of the handling of timestamps so that the offset is cached at
  buffer resize time (during enabling) rather than based on assumption
  that relied in the timestamp being last and the largest element and
  so always 8 bytes before end of the scan. Underlying problem was
  triggered by scans with repeated type elements such as quaternions
  with each element more than 2 bytes - Giving a 16 byte+ aligned channel
  with result that a following timestamp may be 16 bytes from end of scan,
  rather than 8. Note that for the bosch,bno55 a compatibility hack means
  that it will duplicate the timestamp putting  a second copy at previously
  incorrect location.
- Tidy up use of kernel types in buffer code to not use int64_t given all
  calls use s64.
various drivers
- Drop unused driver_data in device id tables - includes cleanup of various
  drivers that had only one choice where it can be hard coded elsewhere.
- Move to named initializers for many i2c_device_id and platform_device_id
  tables (I have no idea how we go into habit of using named initializers
  for only a subset of the table types - e.g. of_device_id).
- Make IIO_CHAN_SOFT_TIMESTAMP() macro a compound literal allowing simple
  use in various drivers that do dynamic channel definitions. Use it in
  all such cases.
- Use dev_err_probe() and local dev variables to tidy up older drivers.
- Switch more drivers to devm_mutex_init() to provide minor debug benefits.
- Reorder code to put MODULE_DEVICE_TABLE() next to the tables.
- Lots of use of cleanup.h magic to improve code flow, often including
  related refactors such as introducing helpers.
- Replacement of usleep_range() with fsleep()
- Reduce logging noise where functions either provide their own extensive
  reports on error, or where a clear error code is returned to userspace.
- Minor spelling and style fixes (improving bracket usage, not using
  __packed etc)
hid-sensors-*
- Drop helpers for setting channel bit masks in favor of a compound
  literal at the call site.  Also general cleanup of surrounding code.
hid-sensors-magn
- Use u32 rather than bare unsigned for types.
hid-sensors-rotation
- Make sue of ext_scan_type handling for static case rather than duplicate
  chan_info structures.
adi,ad3552r
- Use field_get() to replace open coded equivalent.
adi,ad4170
- Switch from switch to table lookup for GPIO modes.
adi,ad5686
- Apply IWYU principal to included a consistent set of headers.
- Deduplicate regmaps for AD5684 and AD5693 as identical.
- Switch from an enum value in driver data and array look up to pointers
  to separate structures, improving readabilty and avoiding issues with
  0 value when using helpers to deal with different firmware types.
- Add of_match_id table to SPI driver rather than relying on fallback to
  spi_device_id table.
- Introduce some helpers for powerdown mask control.
- Add helpers for control sync simplifying a couple of corner cases.
- Docs fixes.
- Add an ops structure to simplify future addition of operations beyond
  read and write.
adi,ad7191
- Switch to best practice of using device_property_present() to detect
  if an optional property is there rather than error values on querying
  the property.
adi,ad7280a
- Use local variables to improve readability of breaking up chan-address.
adi,ad7825
- Cleanup a type mismatch in clamp() call.
adi,ad799x
- Include improvements
- Local dev variable to shorten code lines.
- Cache regulator voltage at probe (these never change in practice)
- Convert to devm for all unwind handling.
adi,ad9832
- Improve include relevance including replacing kernel.h with more specific
  headers.
- Simplify some maths.
adi,ad9834
- Improve include relevance including replacing kernel.h with more specific
  headers.
adi,adt7316
- Add a comment to avoid future 'fixes' for error handling during the
  odd sequence used to flip from I2C mode to SPI mode.
adi,adxl*
- Documentation consistency improvements.
asahi-kasei,ak8975
- Fix missing runtime pm calls for buffered capture.
- Fix missing pm_runtime_put_autosuspend() in an error path that would leave
  the device stuck on.
- Close a potential uninitialized kernel stack leak.
- Extensive driver modernization including: header relevance, fsleep()
  various minor bugs, dropping duplicate error messages and avoiding
  magic lengths for buffers.
- Replace opencoded polling with iopoll().
- Add error checking to gpio reads.
avia,hx711
- Move scale computation from global data to per device avoiding problems
  if multiple devices present.
- General binding text cleanup.
bosch,bmg160
- Add missing mount-matrix entry to binding.
bosch,bno55
- Terminate error strings with newlines.
devantech,srf08
- Replace sprintf() with sysfs_emit() and sysfs_emit_at() to make intent
  clearer.
freescale,mma8452
- Add missing return value check.
- Fix potential probe ordering issue by switching to non devm irq request.
linear,ltc2309
- Add chip specific read delays.
- Improve chip_info structure, adding __counted_by_ptr marking and
  reorganizing to improve packing.
linear,ltc2983
- Fix a firmware combination where default n_wires of 2 bypasses exclusion
  of adi,current-rotate whereas explicitly setting it to 2 does not.
- Fix potential race with completion reinit.
- Improve error message wording consistency.
- Use fwnode_property_present() to detect optional properties rather
  than fragile return value checking.
microchip,mcp3422
- Use of GENMASK(), FIELD_GET(), FIELD_PREP() to improve readability and
  generally modernize driver.
microchip,mcp47feb02
- Fix binding example to use a possible I2C address.
- Fix binding bounds on channel number.
- Standardize binding example indentation
nxp,saradc
- Increase chances of recovering from a failure in the interrupt handler
  by notifying the trigger that it can reenable even when the read failed.
- Use field_get() to replace opencoded equivalent.
qualcomm,*
- Standardize on Qualcomm company naming in Kconfig.
richtek,rtq6056
- Add i2c_device_id table for legacy instantiation.
samsung,ssp
- Replace custom timestamp channel macro with main one.
sciosense,ens210
- Now scoped_guard() has been reworked, no need for a return
  that can never be reached.
sensiron,scd30
- Constify command lookup table.
- Sanity check for NULL buffer of non zero size being provided to
  sc30_i2c_command()
sensortek,stk3310
- Include  more appropriate headers.
- Ensure interrupt in appropriate mode after resume.
- Structure definition improvements.
- Use size_of() to replace opencoded sizes.
siliconimage,si1133
- Resolve counter related issues on timeout error paths.
- Unused macro removal, improved macro definitions,.
- Include relevance improvements.
st,lsm6dsx
- Fix an issue with applying invalid data check to wrong type of sample.
taos,tcs3472
- Try to powerdown chip on probe failure.
- Devm usage and dropping of remove() callback.
- Various other minor cleanup.
taos,tsl2591
- Dead code removal.
- Simplify tsl2591_persist functions using a look up table.
ti,ads1298
- Fix wrong comment on timeout (and minor code improvement)
- Drop unnecessary CONFIG2 write during init.
ti,ads7950
- Check ret rather that ret < 0 for spi_setup() call.
- Use fully devm managed resources including moving to
  devm_regulator_get_enable_read_voltage() at probe time rather than
  querying evey time.
- Using spi_optimize_message() to reduce CPU usage.
ti,ads8688
- User read_avail() callback rather than open coding handling of
  available attributes.
ti,opt3001
- Header relevance improvements
- Use GENMASK for field definitions to improve readability.
vishay,vcnl4000
- Switch from enum in device_data to individual names structures
  impmroving code readabililty.
- Move to devm handling for remainder of probe.
vishay,veml6030
- Drop pointless read of current Iteration Time index as it is not used.
xilinx,ams
- Fix potential out of bound channel lookup.
- Replace some large switch statements with table lookups.
yamaha,yas530
- Put label in chip info structure to avoid look up in i2c_device_id table.

Drop
----

iio-trig-interrupt.
- Not used for some time and no support for modern firmware bindings or
  in kernel users. So drop it.

* tag 'iio-for-7.2a' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (266 commits)
  iio: adc: nxp-sar-adc: harden buffer ISR against per-channel read failure
  iio: chemical: scd30: Replace manual locking with RAII locking
  iio: light: tsl2591: remove unneeded tsl2591_compatible_als_persist_cycle()
  iio: dac: ad5686: create bus ops struct
  iio: dac: ad5686: cleanup doc header of local structs
  iio: dac: ad5686: add control_sync() for single-channel devices
  iio: dac: ad5686: add helpers to handle powerdown masks
  iio: dac: ad5686: add of_match table to the spi driver
  iio: dac: ad5686: drop enum id
  iio: dac: ad5686: remove redundant register definition
  iio: dac: ad5686: refactor include headers
  iio: adc: ad4080: fix AD4880 chip ID
  iio: light: veml3328: add support for new device
  dt-bindings: iio: light: veml6030: add veml3328
  docs: iio: adc: ad4691: add driver documentation
  iio: adc: ad4691: add oversampling support
  iio: adc: ad4691: add SPI offload support
  iio: adc: ad4691: add triggered buffer support
  iio: adc: ad4691: add initial driver for AD4691 family
  dt-bindings: iio: adc: add AD4691 family
  ...
 2026-06-08 21:32:52 +02:00
Greg Kroah-Hartman
39f9c91bce MHI Host 
--------
 
 - Request power-of-2 MSI vectors from pci_generic driver for sanity.
 
 - Add support for Telit FE910C04 modem based on Qcom SDX35 chipset
 
 - Fix the check used to identify the physical functions to work with both SR-IOV
   and non-SR-IOV devices
 
 MHI Endpoint
 ------------
 
 - Fix a potential deadlock in the mhi_ep_reset_worker() helper
 
 - Add lock around mhi_ep_handle_syserr() in the error path to avoid race in
   setting MHI state in the error path
 
 - Add missing state_lock protection for mhi_state access
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Merge tag 'mhi-for-v7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mani/mhi into char-misc-next

Manivannan writes:

MHI Host
--------

- Request power-of-2 MSI vectors from pci_generic driver for sanity.

- Add support for Telit FE910C04 modem based on Qcom SDX35 chipset

- Fix the check used to identify the physical functions to work with both SR-IOV
  and non-SR-IOV devices

MHI Endpoint
------------

- Fix a potential deadlock in the mhi_ep_reset_worker() helper

- Add lock around mhi_ep_handle_syserr() in the error path to avoid race in
  setting MHI state in the error path

- Add missing state_lock protection for mhi_state access

* tag 'mhi-for-v7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mani/mhi:
  bus: mhi: host: pci_generic: Fix the physical function check
  bus: mhi: ep: Protect mhi_ep_handle_syserr() in the error path
  bus: mhi: host: pci_generic: Add Telit FE910C04 modem support
  bus: mhi: ep: Add missing state_lock protection for mhi_state access
  bus: mhi: ep: Fix potential deadlock in mhi_ep_reset_worker()
  bus: mhi: host: pci_generic: Round up nr_irqs to power of two
 2026-06-08 21:27:34 +02:00
Greg Kroah-Hartman
b23338788b FPGA Manager changes for 7.2-rc1 
- Wentao fixes use-after-free issue in of-fpga-region
 - Phil adds the of matching for Altera ts73xx fpga driver
 - Ian adds Efinix FPGA SPI programming driver
 - Andy fixes several minor issues for Lattice FPGA driver
 - Manish converts dt-bindings to YAML schema for several Altera devices
 - Sebastian fixes several minor issues for Intel DFL & Microchip FPGAs
 
 All patches have been reviewed on the mailing list, and have been in the
 last linux-next releases (as part of our for-next branch).
 
 Signed-off-by: Xu Yilun <yilun.xu@intel.com>
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Merge tag 'fpga-for-7.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/fpga/linux-fpga into char-misc-next

Xu writes:

FPGA Manager changes for 7.2-rc1

- Wentao fixes use-after-free issue in of-fpga-region
- Phil adds the of matching for Altera ts73xx fpga driver
- Ian adds Efinix FPGA SPI programming driver
- Andy fixes several minor issues for Lattice FPGA driver
- Manish converts dt-bindings to YAML schema for several Altera devices
- Sebastian fixes several minor issues for Intel DFL & Microchip FPGAs

All patches have been reviewed on the mailing list, and have been in the
last linux-next releases (as part of our for-next branch).

Signed-off-by: Xu Yilun <yilun.xu@intel.com>

* tag 'fpga-for-7.2-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/fpga/linux-fpga:
  fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()
  fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region()
  fpga: dfl: add bounds check in dfh_get_param_size()
  dt-bindings: fpga: altr,socfpga-fpga-mgr: convert to DT schema
  dt-bindings: fpga: altr,a10-pr-ip: convert to DT schema
  fpga: lattice-sysconfig-spi: simplify with spi_get_device_match_data()
  fpga: lattice-sysconfig-spi: Don't use "proxy" headers
  fpga: lattice-sysconfig-spi: Drop of_match_ptr() protection
  fpga: lattice-sysconfig-spi: Fix the terminator entries in ID tables
  fpga-mgr: Add Efinix SPI programming driver
  dt-bindings: fpga: Add Efinix SPI programming bindings
  dt-bindings: vendor-prefix: Add prefix for Efinix, Inc.
  fpga: ts73xx-fpga: add OF match table for device tree probing
  dt-bindings: fpga: Add Technologic Systems TS-7300 FPGA Manager
  fpga: region: fix use-after-free in child_regions_with_firmware()
 2026-06-08 21:26:50 +02:00
Greg Kroah-Hartman
099b02d3dd Counter updates for 7.2 
Manual mutex lock logic is replaced by lock guards in intel-qep.
 Additionally, devm_mutex_init() is now used in ftm-quaddec,
 interrupt-cnt, and intel-qep to handle mutex cleanup automatically.
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Merge tag 'counter-updates-for-7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/wbg/counter into char-misc-next

William writes:

Counter updates for 7.2

Manual mutex lock logic is replaced by lock guards in intel-qep.
Additionally, devm_mutex_init() is now used in ftm-quaddec,
interrupt-cnt, and intel-qep to handle mutex cleanup automatically.

* tag 'counter-updates-for-7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/wbg/counter:
  counter: intel-qep: Use devm_mutex_init()
  counter: interrupt-cnt: use devm_mutex_init()
  counter: ftm-quaddec: use devm_mutex_init()
  counter: intel-qep: Replace manual mutex logic with lock guards
 2026-06-08 21:26:09 +02:00
Tze Yee Ng
71e6a19fe2 firmware: stratix10-svc: Add support to query Arm Trusted Firmware (ATF) version 
Add entry in Stratix10 service layer that allow client to retrieve the ATF
version at runtime, which is useful for system diagnostics, compatibility
checks, and ensuring the correct secure firmware is in use.

The change introduces:
- A new service command definition in the Stratix10 service layer to
initiate the ATF version query.
- A corresponding macro definition in the header file to expose the command
ID for use by other components.

The service layer uses a Secure Monitor Call (SMC) to communicate with the
ATF and retrieve the version string, which can then be logged or validated
by client application.

Signed-off-by: Tze Yee Ng <tze.yee.ng@altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
 2026-06-08 22:37:35 +09:00
Dinh Nguyen
30b1f763bf firmware: stratix10-rsu: avoid blocking reboot_image sysfs when busy 
Writes to the reboot_image sysfs attribute went through rsu_send_msg(),
which unconditionally takes priv->lock with mutex_lock(). If another RSU
operation is in flight (e.g. a DCMF status query from probe or a
concurrent sysfs read path), userspace writers get stuck in the kernel
waiting on the mutex instead of being told the device is busy.

Split rsu_send_msg() into an inner __rsu_send_msg_locked() helper that
performs the SMC transaction with the caller holding priv->lock, plus
two thin wrappers: rsu_send_msg() preserves the original blocking
behaviour for existing callers, and rsu_try_send_msg() uses
mutex_trylock() and returns -EBUSY immediately when the lock is held.

Use rsu_try_send_msg() from reboot_image_store() so the write returns
-EBUSY without blocking when an RSU operation is already running.
Userspace can retry on -EBUSY. No functional change for other sysfs
attributes.

This keeps blocking rsu_send_msg() for existing callers, add
rsu_try_send_msg() with -EBUSY only for reboot_image_store(). That
matches the original goal (avoid a second reboot_image write blocking
behind priv->lock) without changing sysfs behaviour for the other
attributes. The earlier idea of using mutex_trylock() in all of
rsu_send_msg() and returning -EAGAIN would have been harder to justify
for userspace (echo does not retry on that).

Tze Yee tested the patch on an Agilex SoC devkit.

[Test 1] Idle reboot_image write (success path)
Result:
   # insmod stratix10-rsu.ko
   # echo 0x01000000 > .../reboot_image
   # echo "exit=$?"
   exit=0
   # ./rsu_client --log
         VERSION: 0x00000202
           STATE: 0x00000000
   CURRENT IMAGE: 0x0000000001000000
      FAIL IMAGE: 0x0000000000000000
       ERROR LOC: 0x00000000
   ERROR DETAILS: 0x00000000
   RETRY COUNTER: 0x00000000
   Operation completed

[Test 2] reboot_image while priv->lock is held (-EBUSY path)
To get a deterministic busy window without flooding the service layer,
add a local debug helper (module parameter debug_hold_lock_sec +
kthread that holds priv->lock for N seconds after probe).

Result:
   # insmod stratix10-rsu.ko debug_hold_lock_sec=60
   [  121.220904] stratix10-rsu stratix10-rsu.0: TEST: RSU lock held for
60 s - try reboot_image now
   # echo 0x01000000 > .../reboot_image
   -sh: echo: write error: Device or resource busy
   # echo "during hold: exit=$?"
   during hold: exit=1
   [  183.268706] stratix10-rsu stratix10-rsu.0: TEST: RSU lock released
   # echo 0x01000000 > .../reboot_image
   # echo "after release: exit=$?"
   after release: exit=0

Together, these results match the intended behaviour: reboot_image
fails fast with -EBUSY when the RSU mutex is already held, and
succeeds once the lock is available.

Assisted-by: Claude:claude-opus-4-7
Tested-by: Tze Yee Ng <tze.yee.ng@altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
 2026-06-08 22:37:35 +09:00
Junrui Luo
98495b5a4d coresight: ultrasoc-smb: Fix OOB write in smb_sync_perf_buffer() 
When the SMB sink is used as a perf AUX sink, smb_update_buffer() calls
smb_sync_perf_buffer() to copy hardware trace data into the perf AUX ring
buffer pages. It derives pg_idx = head >> PAGE_SHIFT from @head, which is
handle->head, and indexes dst_pages[pg_idx]. The pg_idx %= nr_pages
normalization is only applied after the first loop iteration.

This leaves the initial page index underived from the buffer size, which
can result in an out-of-bounds write past dst_pages[] when head exceeds
the AUX buffer size.

Normalize head modulo the AUX buffer size before deriving the page index
and offset, mirroring tmc_etr_sync_perf_buffer().

Fixes: 06f5c2926a ("drivers/coresight: Add UltraSoc System Memory Buffer driver")
Reported-by: Yuhao Jiang <danisjiang@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Junrui Luo <moonafterrain@outlook.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/SYBPR01MB788156B3380A36835DB22290AF102@SYBPR01MB7881.ausprd01.prod.outlook.com
 2026-06-04 09:56:13 +01:00
Stepan Ionichev
ae696dfa47 iio: adc: nxp-sar-adc: harden buffer ISR against per-channel read failure 
nxp_sar_adc_isr_buffer() bails on the first channel-read failure
without calling iio_trigger_notify_done(), so the trigger use_count
is left incremented and iio_trigger_poll_chained() drops subsequent
dispatches until the device is rebound.

Reaching this path means a state machine has gone wrong (driver bug
or the SAR ADC in an unexpected state) rather than a transient bus
issue, so this is hardening rather than a bug fix. If the underlying
condition persists the device is wedged and needs an unbind anyway.

Call iio_trigger_notify_done() on the error exit too, matching the
success path. The nxp_sar_adc_read_notify() duplication is intentional
and avoids a goto label for a two-line bail-out, as suggested by David.

Signed-off-by: Stepan Ionichev <sozdayvek@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-03 18:29:09 +01:00
Maxwell Doose
eb60a24b35 iio: chemical: scd30: Replace manual locking with RAII locking 
scd30_core.c currently uses manual mutex_lock() and mutex_unlock()
calls. Replace them with the newer guard(mutex)() for cleaner RAII
patterns and to improve maintainability.

Add new helper function scd30_trigger_handler_helper() containing
the critical section for scd30_trigger_handler().

In addition, small refactor to replace "?:" operator with regular
if/else returns.

Signed-off-by: Maxwell Doose <m32285159@gmail.com>
Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-03 14:54:08 +01:00
Lucas Rabaquim
b1d1bfa26c iio: light: tsl2591: remove unneeded tsl2591_compatible_als_persist_cycle() 
The function was only used to verify if als_persist is a
TSL2591_PRST_ALS_INT_CYCLE_* value. However, before its call in
tsl2591_write_event_value(), the line
als_persist = tsl2591_persist_lit_to_cycle(period) is executed,
meaning that by the time tsl2591_compatible_als_persist_cycle()
is reached, als_persist is a TSL2591_PRST_ALS_INT_CYCLE_* value,
making the verification pointless.

Suggested-by: Sashiko <sashiko-bot@kernel.org>
Link: https://sashiko.dev/#/patchset/20260528185912.24774-1-matheus.feitosa%40usp.br
Signed-off-by: Lucas Rabaquim <lucas.rabaquim@usp.br>
Co-developed-by: Matheus Silveira <matheus.feitosa@usp.br>
Signed-off-by: Matheus Silveira <matheus.feitosa@usp.br>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-03 12:10:56 +01:00
Rodrigo Alencar
ae8360f371 iio: dac: ad5686: create bus ops struct 
Create struct with bus operations, which will be used to extend bus
implementation features. Auxiliary functions ad5686_write() and
ad5686_read() are created and ad5686_probe() now receives an ops struct
pointer rather than individual read and write functions.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-02 15:24:48 +01:00
Rodrigo Alencar
883a752cc4 iio: dac: ad5686: cleanup doc header of local structs 
Review documentation comment header for ad5686_chip_info and ad5686_state.
Update variable names and description and remove unnecessary blank line
between comment and struct declaration.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-02 15:24:48 +01:00
Rodrigo Alencar
592b378791 iio: dac: ad5686: add control_sync() for single-channel devices 
Create ad5310_control_sync() and ad5683_control_sync() functions that
properly consume the mask definitions with FIELD_PREP(). This allows to
reuse a function that updates the control register with cached values,
without relying on confusing logic that depends on st->use_internal_vref,
which is initialized earlier in ad5686_probe() because it is also
applicable to the AD5686_REGMAP case, removing the need for the
has_external_vref. Powerdown masks initialization is simplified as
*_control_sync() masks outs any unused bits for the single-channel case.
The change cleans up ad5686_write_dac_powerdown() and ad5686_probe(),
organizing the code for feature extension, e.g. gain control support for
single-channel devices.

Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-02 15:24:47 +01:00
Rodrigo Alencar
16fc40c250 iio: dac: ad5686: add helpers to handle powerdown masks 
Add ad5686_pd_field_set() and ad5686_pd_field_get() helpers to cleanup
powerdown mask control. Define AD5686_PD_* constants, e.g. AD5686_PD_MSK
to hold powerdown mask value for a single channel. AD5686_LDAC_PWRDN_*
macros are replaced by AD5686_PD_MODE_*, because they are unused and the
LDAC feature for async load of DAC channel values is not related to power
down control.

Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-02 15:24:47 +01:00
Rodrigo Alencar
34222a4549 iio: dac: ad5686: add of_match table to the spi driver 
Add of_match table for the SPI device variants to be consistent with the
AD5696 I2C driver.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-02 15:24:47 +01:00
Rodrigo Alencar
0eb1728461 iio: dac: ad5686: drop enum id 
Split chip info table into separate structs and expose them to the spi
i2c drivers. That is the preferrable approach and allows for the drivers
to have knowledge of the device info before the common probe function gets
called. Those chip info structs may be shared by SPI and I2C driver
variants.
Channel declaration definitions are grouped according to channel count and
DECLARE_AD5693_CHANNELS() macro is renamed to DECLARE_AD5683_CHANNELS() to
match the regmap_type enum.
Use spi_get_device_match_data() and i2c_get_match_data() to get chip info
struct reference, passing it as parameter to the core probe function.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-02 15:24:47 +01:00
Rodrigo Alencar
126c786840 iio: dac: ad5686: remove redundant register definition 
AD5683_REGMAP and AD5693_REGMAP behave the same way in the common code,
and that is because they target single channel devices from the same
sub-family. There is no reason to separate them and it will make things
simpler when refactoring the chip info table.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-02 15:24:47 +01:00
Rodrigo Alencar
628105e8f7 iio: dac: ad5686: refactor include headers 
Apply IWYU principle, replacing unused/generic headers for
specific/missing headers. The resulting include directive lists are sorted
accordingly.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-02 15:24:47 +01:00
Jonathan Cameron
c82228f76a Linux 7.1-rc6 
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Merge tag 'v7.1-rc6' into work

Linux 7.1-rc6
 2026-06-02 15:24:19 +01:00
Antoniu Miclaus
3f2d03ecf2 iio: adc: ad4080: fix AD4880 chip ID 
The AD4880 chip ID was incorrectly set to 0x0750. According to the
datasheet, the product ID registers read 0x00 (PRODUCT_ID_H) and 0x59
(PRODUCT_ID_L), giving a combined chip ID of 0x0059. Fix the value to
match the actual hardware.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-02 15:23:05 +01:00
Joshua Crofts
e45a44f219 iio: light: veml3328: add support for new device 
Add support for the Vishay VEML3328 RGB/IR light sensor communicating
via I2C (SMBus compatible).

Also add a new entry for said driver into Kconfig and Makefile.

Assisted-by: Gemini:3.1-Pro
Signed-off-by: Joshua Crofts <joshua.crofts1@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-02 14:03:20 +01:00
Greg Kroah-Hartman
da61573f78 Linux 7.1-rc6 
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Merge tag 'v7.1-rc6' into char-misc-next

We need the char/misc/iio fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2026-06-01 18:10:34 +02:00
Joshua Crofts
278b9d0fce dt-bindings: iio: light: veml6030: add veml3328 
The Vishay VEML3328 is an RGBCIR light sensor that shares similar
devicetree properties as other existing VEMLxxxx sensors in the
kernel.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Joshua Crofts <joshua.crofts1@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-06-01 10:20:10 +01:00
Sebastian Alba Vives
43a1974da6 fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header() 
mpf_ops_parse_header() reads header_size from the bitstream at
MPF_HEADER_SIZE_OFFSET (24). When header_size is zero, the expression
*(buf + header_size - 1) reads one byte before the buffer start.

Since initial_header_size is set to 71 in mpf_ops, the fpga-mgr core
guarantees the buffer is large enough to reach MPF_HEADER_SIZE_OFFSET.
The only real gap is the zero header_size case, which cannot be
resolved by providing a larger buffer, so return -EINVAL.

Fixes: 5f8d4a9008 ("fpga: microchip-spi: add Microchip MPF FPGA manager")
Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Alba Vives <sebasjosue84@gmail.com>
Reviewed-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20260518190742.61426-4-sebasjosue84@gmail.com
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>
 2026-06-01 12:29:40 +08:00
Sebastian Alba Vives
fc3b071a7c fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region() 
afu_ioctl_dma_map() accepts a 64-bit length from userspace via
DFL_FPGA_PORT_DMA_MAP ioctl without an upper bound check. The value
is passed to afu_dma_pin_pages() where npages is derived as
length >> PAGE_SHIFT and passed to pin_user_pages_fast() which takes
int nr_pages, causing implicit truncation if length is very large.

Validate map.length at the ioctl entry point before calling
afu_dma_map_region(), rejecting values whose page count exceeds
INT_MAX.

Fixes: fa8dda1ede ("fpga: dfl: afu: add DFL_FPGA_PORT_DMA_MAP/UNMAP ioctls support")
Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Alba Vives <sebasjosue84@gmail.com>
Reviewed-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20260518190742.61426-3-sebasjosue84@gmail.com
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>
 2026-06-01 12:29:13 +08:00
Sebastian Alba Vives
9e8bc49f91 fpga: dfl: add bounds check in dfh_get_param_size() 
dfh_get_param_size() can return a parameter size larger than the feature
region because the loop bounds check is evaluated before incrementing
size. If the EOP (End of Parameters) bit is set in the same iteration,
the inflated size is returned without re-validation against max.

This can cause create_feature_instance() to call memcpy_fromio() with a
size exceeding the ioremap'd region when a malicious FPGA device provides
crafted DFHv1 parameter headers.

Add a bounds check after the size increment to ensure the accumulated
size never exceeds the feature boundary.

Fixes: 4747ab89b4 ("fpga: dfl: add basic support for DFHv1")
Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Alba Vives <sebasjosue84@gmail.com>
Reviewed-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20260518190742.61426-2-sebasjosue84@gmail.com
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>
 2026-06-01 12:28:33 +08:00
Linus Torvalds
e43ffb69e0 Linux 7.1-rc6 2026-05-31 15:14:24 -07:00
Linus Torvalds
8d9c51eac6 [GIT PULL for v7.1-rc6] media fixes 
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Merge tag 'media/v7.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:

 - rc: igorplugusb: fix control request setup packet

 - vsp1: revert a couple patches to fix regressions when setting DRM
   pipelines

* tag 'media/v7.1-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: rc: igorplugusb: fix control request setup packet
  Revert "media: renesas: vsp1: brx: Fix format propagation"
  Revert "media: renesas: vsp1: Initialize format on all pads"
 2026-05-31 11:50:39 -07:00
Linus Torvalds
968966c282 Miscellaneous x86 fixes: 
- Make the clearcpuid= boot parameter less prominent
    and warn about its dangers & caveats (Borislav Petkov)
 
  - Do not access the (new) PLATFORM_ID MSR when running as a guest
    (Borislav Petkov)
 
  - x86 ftrace: Relocate %rip-relative percpu refs in dynamic
    trampolines, to fix crash when using such trampolines
    (Alexis Lothoré)
 
  - Fix x86-64 CFI build error (Peter Zijlstra)
 
  - Revert FPU signal return magic number check optimization, because
    it broke CRIU and gVisor in certain FPU configurations
    (Andrei Vagin)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2026-05-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:

 - Make the clearcpuid= boot parameter less prominent
   and warn about its dangers & caveats (Borislav Petkov)

 - Do not access the (new) PLATFORM_ID MSR when running
   as a guest (Borislav Petkov)

 - x86 ftrace: Relocate %rip-relative percpu refs in dynamic
   trampolines, to fix crash when using such trampolines
   (Alexis Lothoré)

 - Fix x86-64 CFI build error (Peter Zijlstra)

 - Revert FPU signal return magic number check optimization,
   because it broke CRIU and gVisor in certain FPU configurations
   (Andrei Vagin)

* tag 'x86-urgent-2026-05-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "x86/fpu: Refine and simplify the magic number check during signal return"
  x86/kvm/vmx: Fix x86_64 CFI build
  x86/ftrace: Relocate %rip-relative percpu refs in dynamic trampolines
  x86/microcode: Do not access MSR_IA32_PLATFORM_ID when running as a guest
  Documentation/arch/x86: Hide clearcpuid=
 2026-05-31 08:52:16 -07:00
Linus Torvalds
13bd441bb9 SCSI fixes on 20260531 
Two core changes, the only one of significance being the change to kick queues
 in SDEV_CANCEL which had a small window for stuck requests.  The major driver
 fixes are the one to the FC transport class to widen the FPIN counter to
 counter a theoretical (and privileged) fabric traffic injection attack and the
 other is an iscsi fix where a malicious target could trick the kernel into an
 output buffer overrun.  Both the driver fixes were AI assisted.
 
 Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Two core changes, the only one of significance being the change to
  kick queues in SDEV_CANCEL which had a small window for stuck
  requests.

  The major driver fixes are the one to the FC transport class to widen
  the FPIN counter to counter a theoretical (and privileged) fabric
  traffic injection attack and the other is an iscsi fix where a
  malicious target could trick the kernel into an output buffer overrun.

  Both the driver fixes were AI assisted"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: target: iscsi: Validate CHAP_R length before base64 decode
  scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf
  scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd()
  scsi: fcoe: Reject FIP descriptors with zero fip_dlen in CVL walker
  scsi: scsi_transport_fc: Widen FPIN pname walker counter to u32
  scsi: scsi_debug: Add missing newline in scsi_debug_device_reset()
  scsi: megaraid_sas: Fix NULL pointer dereference on firmware duplicate completion
  scsi: devinfo: Add BLIST_NO_RSOC for Promise VTrak E310f
  scsi: core: Run queues for all non-SDEV_DEL devices from scsi_run_host_queues
 2026-05-31 08:45:08 -07:00
Linus Torvalds
9cf1afe6de i2c-for-7.1-rc6 
davinci: fix fallback bus frequency on missing clock-frequency
 virtio: mark device ready initially
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Merge tag 'i2c-for-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:

 - davinci: fix fallback bus frequency on missing clock-frequency

 - virtio: mark device ready initially

* tag 'i2c-for-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: virtio: mark device ready before registering the adapter
  i2c: davinci: fix division by zero on missing clock-frequency
 2026-05-31 08:33:08 -07:00
Linus Torvalds
227abb780c Input updates for v7.1-rc5 
- updates to Elan I2C touchpad driver to handle a new IC type and to
   validate size of supplied firmware to prevent OOB access
 
 - updates to Xpad controller driver to recognize ASUS ROG RAIKIRI II and
   "Nova 2 Lite" from GameSir controllers as well as a fix to prevent a
   potential OOB access when handling "Share" button
 
 - an update to Synaptics touchpad driver to use RMI mode for touchpad in
   Thinkpad E490
 
 - updates to Atmel MXT driver adding checks to prevent potential OOB
   accesses
 
 - a fix to IMS PCU driver to free correct amount of memory when
   tearing it down
 
 - a fixup to the recent change to Atlas buttons driver
 
 - a small cleanup in fm801-fp for PCI IDs table initialisation
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Merge tag 'input-for-v7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:

 - updates to Elan I2C touchpad driver to handle a new IC type and to
   validate size of supplied firmware to prevent OOB access

 - updates to Xpad controller driver to recognize ASUS ROG RAIKIRI II
   and "Nova 2 Lite" from GameSir controllers as well as a fix to
   prevent a potential OOB access when handling "Share" button

 - an update to Synaptics touchpad driver to use RMI mode for touchpad
   in Thinkpad E490

 - updates to Atmel MXT driver adding checks to prevent potential OOB
   accesses

 - a fix to IMS PCU driver to free correct amount of memory when tearing
   it down

 - a fixup to the recent change to Atlas buttons driver

 - a small cleanup in fm801-fp for PCI IDs table initialisation

* tag 'input-for-v7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: ims-pcu - fix usb_free_coherent() size in ims_pcu_buffers_free()
  Input: synaptics - add LEN2058 to SMBus passlist for ThinkPad E490
  Input: atlas - check ACPI_COMPANION() against NULL
  Input: atmel_mxt_ts - check mem_size before calculating config memory size
  Input: atmel_mxt_ts - fix boundary check in mxt_prepare_cfg_mem
  Input: fm801-gp - simplify initialisation of pci_device_id array
  Input: xpad - add "Nova 2 Lite" from GameSir
  Input: xpad - add support for ASUS ROG RAIKIRI II
  Input: elan_i2c - validate firmware size before use
  Input: xpad - fix out-of-bounds access for Share button
  Input: usbtouchscreen - clamp NEXIO data_len/x_len to URB buffer size
  Input: elan_i2c - increase device reset wait timeout after update FW
  Input: elan_i2c - add ic type 0x19
 2026-05-31 08:27:18 -07:00
Radu Sabau
4e8327ccb9 docs: iio: adc: ad4691: add driver documentation 
Add RST documentation for the AD4691 family ADC driver covering
supported devices, IIO channels, operating modes, oversampling,
reference voltage, LDO supply, reset, GP pins, SPI offload support,
and buffer data format.

Signed-off-by: Radu Sabau <radu.sabau@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:14:22 +01:00
Radu Sabau
6d9e7161bf iio: adc: ad4691: add oversampling support 
Add oversampling ratio (OSR) support for CNV burst mode. The accumulator
depth register (ACC_DEPTH_IN(0)) is programmed with the selected OSR at
buffer enable time and before each single-shot read.

Supported OSR values: 1, 2, 4, 8, 16, 32.

Introduce AD4691_MANUAL_CHANNEL() for manual mode channels, which do
not expose the oversampling_ratio attribute since OSR is not applicable
in that mode. A separate manual_channels array is added to
struct ad4691_channel_info and selected at probe time.

The OSR is shared across all channels (in_voltage_sampling_frequency
and in_voltage_oversampling_ratio are info_mask_shared_by_all) because
the chip has one internal oscillator and a single accumulator depth
register (ACC_DEPTH_IN(0)) for all channels.

in_voltage_sampling_frequency represents the effective output rate,
defined as osc_freq / osr. Writing it computes needed_osc = freq * osr
and snaps down to the largest oscillator table entry that satisfies both
osc <= needed_osc and osc % osr == 0, guaranteeing an exact integer
read-back. The result is stored in target_osc_freq_Hz and written to
OSC_FREQ_REG at buffer enable and single-shot time, so sampling_frequency
and oversampling_ratio can be set in any order.

in_voltage_sampling_frequency_available is precomputed at probe for
each OSR value, listing only oscillator table entries that divide
evenly by that OSR, expressed as effective rates (osc_freq / osr).
The list becomes sparser as OSR increases, capping at max_rate / osr.
read_avail picks the precomputed list for the current OSR, making the
returned pointer stable and race-free.

Writing oversampling_ratio stores the new shared OSR and snaps
target_osc_freq_Hz to the largest oscillator table entry that is both
<= old_effective_rate * new_osr and evenly divisible by new_osr. This
preserves an integer read-back of in_voltage_sampling_frequency after
the OSR change while keeping the oscillator as close as possible to the
previous effective rate.

OSR defaults to 1 (no accumulation).

Signed-off-by: Radu Sabau <radu.sabau@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:14:05 +01:00
Radu Sabau
ad4f8513aa iio: adc: ad4691: add SPI offload support 
Add SPI offload support to enable DMA-based, CPU-independent data
acquisition using the SPI Engine offload framework.

When an SPI offload is available (devm_spi_offload_get() succeeds),
the driver registers a DMA engine IIO buffer and uses dedicated buffer
setup operations. If no offload is available the existing software
triggered buffer path is used unchanged.

Both CNV Burst Mode and Manual Mode support offload, but use different
trigger mechanisms:

CNV Burst Mode: the SPI Engine is triggered by the ADC's DATA_READY
signal on the GP pin specified by the trigger-source consumer reference
in the device tree (one cell = GP pin number 0-3). For this mode the
driver acts as both an SPI offload consumer (DMA RX stream, message
optimization) and a trigger source provider: it registers the
GP/DATA_READY output via devm_spi_offload_trigger_register() so the
offload framework can match the '#trigger-source-cells' phandle and
automatically fire the SPI Engine DMA transfer at end-of-conversion.

Manual Mode: the SPI Engine is triggered by a periodic trigger at
the configured sampling frequency. The pre-built SPI message uses
the pipelined CNV-on-CS protocol: N+1 16-bit transfers are issued
for N active channels (the first result is discarded as garbage from
the pipeline flush) and the remaining N results are captured by DMA.

All offload transfers use 16-bit frames (bits_per_word=16, len=2).
The SPI Engine assembles received bits into native 16-bit words before
DMA, so offload samples land in CPU-native byte order (IIO_CPU).
Dedicated channel arrays (AD4691_OFFLOAD_CHANNEL) reflect this: they
omit IIO_BE and carry no soft timestamp (DMA delivers data directly to
userspace). The software triggered-buffer path retains its IIO_BE
channels because bits_per_word=8 causes SPI to deliver bytes MSB-first
into memory, making the on-disk layout big-endian. Both paths use
storagebits=16 as transfers are 16 bits wide in both cases.

IIO_BUFFER_DMAENGINE is selected because the offload path uses
devm_iio_dmaengine_buffer_setup_with_handle() to allocate and
attach the DMA RX buffer to the IIO device.

Signed-off-by: Radu Sabau <radu.sabau@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:13:29 +01:00
Radu Sabau
41297c6bd8 iio: adc: ad4691: add triggered buffer support 
Add buffered capture support using the IIO triggered buffer framework.

CNV Burst Mode: the GP pin identified by interrupt-names in the device
tree is configured as DATA_READY output. The IRQ handler stops
conversions and fires the IIO trigger; the trigger handler executes a
pre-built SPI message that reads all active channels from the AVG_IN
accumulator registers and then resets accumulator state and restarts
conversions for the next cycle.

Manual Mode: CNV is tied to SPI CS so each transfer simultaneously
reads the previous result and starts the next conversion (pipelined
N+1 scheme). At preenable time a pre-built, optimised SPI message of
N+1 transfers is constructed (N channel reads plus one NOOP to drain
the pipeline). The trigger handler executes the message in a single
spi_sync() call and collects the results. An external trigger (e.g.
iio-trig-hrtimer) is required to drive the trigger at the desired
sample rate.

Both modes share the same trigger handler and push a complete scan —
one big-endian 16-bit (__be16) slot per active channel, densely packed
in scan_index order, followed by a timestamp.

The CNV Burst Mode sampling frequency (PWM period) is exposed as a
buffer-level attribute via IIO_DEVICE_ATTR.

Signed-off-by: Radu Sabau <radu.sabau@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:13:12 +01:00
Radu Sabau
40850443aa iio: adc: ad4691: add initial driver for AD4691 family 
Add support for the Analog Devices AD4691 family of high-speed,
low-power multichannel SAR ADCs: AD4691 (16-ch, 500 kSPS),
AD4692 (16-ch, 1 MSPS), AD4693 (8-ch, 500 kSPS) and
AD4694 (8-ch, 1 MSPS).

The driver implements a custom regmap layer over raw SPI to handle the
device's mixed 1/2/3/4-byte register widths and uses the standard IIO
read_raw/write_raw interface for single-channel reads.

The chip idles in Autonomous Mode so that single-shot read_raw can use
the internal oscillator without disturbing the hardware configuration.

Three voltage supply domains are managed: avdd (required), vio, and a
reference supply on either the REF pin (ref-supply, external buffer)
or the REFIN pin (refin-supply, uses the on-chip reference buffer;
REFBUF_EN is set accordingly). Hardware reset is performed by asserting
then deasserting the reset-gpios GPIO line (tRESETL minimum pulse width
is 10 ns, satisfied by function-call overhead); the driver then waits
300 µs for the chip to complete its internal reset sequence. A software
reset via SPI_CONFIG_A is used as fallback when no reset GPIO is
provided.

Accumulator channel masking for single-shot reads uses ACC_MASK_REG via
an ADDR_DESCENDING SPI write, which covers both mask bytes in a single
16-bit transfer.

Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Radu Sabau <radu.sabau@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:04:36 +01:00
Radu Sabau
1ea5792ad7 dt-bindings: iio: adc: add AD4691 family 
Add DT bindings for the Analog Devices AD4691 family of multichannel
SAR ADCs (AD4691, AD4692, AD4693, AD4694).

The four variants are not compatible with each other: AD4691/AD4692 have
16 analog input channels while AD4693/AD4694 have 8, and AD4691/AD4693
top out at 500 kSPS while AD4692/AD4694 reach 1 MSPS. These differences
in channel count and maximum sample rate require distinct compatible
strings so the driver can select the correct channel configuration and
rate limits.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Radu Sabau <radu.sabau@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:02:04 +01:00
Antoniu Miclaus
7853cf5b65 iio: adc: ad4080: add support for AD4884 
Add support for the AD4884, a dual-channel, 16-bit, 40 MSPS SAR ADC.

The AD4884 is the dual-channel variant of the AD4084, sharing the same
register map and SPI interface as the rest of the AD4080 family. Like
the AD4880, it uses two independent ADC channels, each with its own SPI
configuration interface.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:01:51 +01:00
Antoniu Miclaus
4bff2ca299 dt-bindings: iio: adc: ad4080: add AD4884 support 
Add AD4884 compatible string to the AD4080 devicetree binding.

The AD4884 is a dual-channel, 16-bit, 40 MSPS SAR ADC, sharing the same
register map and interface as the AD4080 family. Like the AD4880, it
requires two SPI chip selects and two io-backends for its independent
ADC channels. The AD4884 differs from the AD4880 in resolution (16-bit
vs 20-bit), which requires distinct channel configuration in the driver,
precluding a fallback compatible.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:01:51 +01:00
Matheus Silveira
40d7dc96cf light: tsl2591: simplify tsl2591_persist functions via lookup table 
Replace switch statements with an indexed lookup table for
persist cycle conversions.

Both functions contain redundant switch statements. This
reduces code duplication and makes future updates to
TSL2591_PRST_ALS_INT_CYCLE_* definitions easier to maintain
by keeping the mapping in a single place.

Signed-off-by: Matheus Silveira <matheus.feitosa@usp.br>
Co-developed-by: Lucas Rabaquim <lucas.rabaquim@usp.br>
Signed-off-by: Lucas Rabaquim <lucas.rabaquim@usp.br>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:01:51 +01:00
Uwe Kleine-König (The Capable Hub)
36862727e0 iio: Use named initializers for platform_device_id arrays 
Named initializers are better readable and more robust to changes of the
struct definition. This robustness is relevant for a planned change to
struct platform_device_id replacing .driver_data by an anonymous union.

Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:01:51 +01:00
Liviu Stan
3dd0c04840 iio: temperature: ltc2983: Add support for ADT7604 
The ADT7604 shares the same die as the LTC2984. It repurposes the
custom RTD sensor type (18) as a copper trace resistance sensor
and the custom thermistor type (27) as a leak detector, and
removes thermocouple, diode and direct ADC sensor types.

Two new software sensor type values are introduced
(LTC2983_SENSOR_COPPER_TRACE = 32, LTC2983_SENSOR_LEAK_DETECTOR = 33)
that map to the hardware register values 18 and 27 respectively.
Dedicated structs (ltc2983_copper_trace, ltc2983_leak_detector) and
parser functions are added rather than extending the existing RTD and
thermistor paths, as the hardware configuration bits are fully
hardcoded and several RTD/thermistor properties would need to be
explicitly forbidden or ignored.

Custom RTD (type 18) becomes the copper trace sensor. Sensor
configuration bits are hardcoded to 0b1001 per the datasheet.
Two variants are supported via the adi,copper-trace-sub-ohm DT
property: sub-ohm traces (< 1 ohm) have bits 17:0 cleared with no
excitation current or custom table; standard traces (> 1 ohm) have
a required resistance-to-temperature table.

Custom thermistor (type 27) becomes the leak detector. Sensor
configuration bits are hardcoded to 0b001. The custom table uses
a resolution of 16 instead of 64, and is specified via the
required adi,custom-leak-detector DT property.

Both sensor types expose an IIO_RESISTANCE channel reading from
the resistance result register bank (0x0060-0x00AF). Added a
"base" parameter to the LTC2983_RESULT_ADDR macro and a "base_reg"
parameter to the ltc2983_chan_read function so we can read from
both result register banks. The resistance register encodes the
measured resistance with 10 fractional bits, so dividing by 1024
gives ohms. Since the sense resistor is specified in ohms, the
output is in ohms for both sensor types and a single 1/1024
scale applies to both. For > 1 ohm copper traces and for leak
detectors, a secondary channel also appears: IIO_TEMP
(millidegrees Celsius) for copper trace and IIO_COVERAGE (percent)
for leak detector.

The ltc2983_chip_info struct is extended with a u64 supported_sensors
bitmask using BIT_ULL() to safely represent the new sensor type bits
32 and 33 on 32-bit builds. A LTC2983_SENSOR_NUM sentinel is added
to the enum so that the bounds check uses >= LTC2983_SENSOR_NUM
rather than hardcoding the last sensor type.

Tested on EVAL-ADT7604-AZ connected to Raspberry Pi 5 via SPI.

Signed-off-by: Liviu Stan <liviu.stan@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:01:50 +01:00
Liviu Stan
a496ba27dd dt-bindings: iio: temperature: Add ADT7604 support to adi,ltc2983 
The ADT7604 shares the same die as the LTC2984. It repurposes the
custom RTD sensor type (18) as a copper trace resistance sensor
and the custom thermistor type (27) as a leak detector, and
removes thermocouple, diode and direct ADC sensor types.

Add adi,adt7604 to the compatible list and introduce two new
sensor node types specific to this device:

- copper-trace@: maps to the custom RTD sensor type (18). Two
variants: sub-ohm (< 1 ohm, adi,copper-trace-sub-ohm boolean,
no custom table and excitation current) and standard (> 1 ohm,
required adi,custom-copper-trace table, optional excitation current
defaulting to the datasheet recommended value). Primary output
is resistance in ohms. For > 1 ohm copper traces with a custom table,
the chip also outputs temperature in millidegrees Celsius.

- leak-detector@: maps to the custom thermistor sensor type (27).
Takes a required adi,custom-leak-detector lookup table encoding
resistance (uOhm) against coverage data (%). Two outputs:
resistance in ohms and coverage in percent.

Separate node types are used rather than extending the existing
rtd@ and thermistor@ nodes because adi,custom-rtd is required
for sensor type 18, and several properties (adi,number-of-wires,
adi,rtd-curve, adi,rsense-share, adi,single-ended,
adi,current-rotate) have no meaning for the new sensor types, since
the configuration is hardcoded, and would need to be explicitly
forbidden or ignored in the driver.

allOf conditions are added to restrict thermocouple, diode, direct
ADC and active temperature nodes to non-ADT7604 devices, and to
restrict copper-trace and leak-detector nodes to the ADT7604
(some parts only).

Signed-off-by: Liviu Stan <liviu.stan@analog.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:01:50 +01:00
Liviu Stan
622775dbc5 iio: core: Add IIO_COVERAGE channel type 
Add a new channel type for sensors that report fractional coverage as
a percentage. The sysfs attribute is in_coverageY_raw; after applying
in_coverageY_scale the value is in percent. The first user is the
ADT7604 leak detector, where the value represents the portion of the
sensing element that is wetted.

Signed-off-by: Liviu Stan <liviu.stan@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:01:50 +01:00
Liviu Stan
b46696afbc iio: temperature: ltc2983: Use fwnode_property_present() for optional properties 
Checking fwnode_property_read_u32() return value with if (!ret)
silently swallows meaningful error codes when a property is present
but malformed. Use fwnode_property_present() first so that absence
uses the default while a present but unreadable property returns
a proper error.

Signed-off-by: Liviu Stan <liviu.stan@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:01:50 +01:00
Liviu Stan
ae81c43f6c iio: temperature: ltc2983: Fix inconsistent channel wording in messages 
Replace occurrences of the abbreviated 'chann' and 'chan' with
'channel' in error and debug messages throughout the driver.
Also changed the diode invalid channel error message from
"thermistor" to "diode".

Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>
Signed-off-by: Liviu Stan <liviu.stan@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
 2026-05-31 11:01:50 +01:00